CN113396112B - Plastic closure for a tubular outlet connection of a container - Google Patents

Abstract

The invention relates to a plastic closure for a tubular outlet nozzle of a container, comprising a closure cap which is releasably fastened to the nozzle by means of a thread, the cap being permanently connected to the nozzle by means of a retaining strap which is fastened to the nozzle by means of a first lower end and extends therefrom with a first strap region on the side of the cap upwards, the retaining strap having a curvature in an upper region in order to extend downwards with a second strap region up to a second lower end, the retaining strap being connected between its ends to the closure cap by means of at least one tearable tab; and/or the first and second belt regions are connected to each other by at least one tearable tab; and/or the retaining strap is connected to the closure cap or cap gripping surface via a tearable tab; the closure cap has a laterally projecting wing-shaped gripping surface on the upper end, against which the upper curved region of the holding strap abuts in the closed state, the gripping surface having a recess on the underside into which the curved portion protrudes.

Description

Plastic closure for tubular discharge nozzle of container

Technical field

The invention relates to a plastic closure for a tubular discharge nozzle of a container, which plastic closure has a closure cap which is releasably fastened to the nozzle, in particular via a thread, wherein the cover and nozzle are connected via a retaining strap. Connect permanently.

Background technique

It is known to fasten a closing cap to a threaded nipple of a container by means of a retaining strap in order to maintain the cap inseparably on the container even when the cap is unscrewed and the liquid can be removed from the container, EP 0 810 952 B1. This ensures that the lid will not leave the container in the unscrewed state and will not pollute the environment. However, a short retaining strap allows only a small angle of rotation for screwing.

Contents of the invention

It is an object of the invention to improve a closure of the type mentioned at the outset in such a way that, while being simple in construction and operation, the thread between the cover and the discharge nozzle also has a large angle of rotation. The screw-off lid securely stays on the container.

According to the invention, a plastic closure for a tubular discharge nozzle of a container is proposed, the plastic closure having a closing cover which is releasably fixed on the discharge nozzle, wherein the closing cover and the discharge nozzle are held together by The strap is permanently connected and, with the nipple axis vertical, the retaining strap is fastened with a first lower end to the outlet nipple and extends from there with a first strap area upwardly on the side of the closure cover and with the closure cover closed downward, the retaining strip has a bend in the upper region so as to extend downward in a second strip region to a second lower end of the retaining strip, said second lower end being fixed to the closure cover, wherein said The retaining strap is connected to the closure cap between its ends via at least one tearable tab; and/or the first strap area and the second strap area are connected to each other via at least one tearable tab; and/or The retaining strip is connected to the closure cover or the cover gripping surface via a tearable web; wherein the closure cap has a laterally protruding wing-shaped gripping surface at its upper end, which in the closed state The retaining strip rests with its upper curved area against the underside of the wing-shaped gripping surface, and the gripping surface has a recess on its underside into which the curvature projects.

According to the invention, this object is achieved in that, with the axis of the nozzle vertical, the retaining strap is fastened to the nozzle with a first lower end and extends from there with a first strap region upwardly on the side of the cover, and With the cover closed, the retaining strip has a bend in the upper region so as to extend downward again with a second strip region as far as a second lower end of the retaining strip, which is fixed to the cover.

This construction results in a larger length of retaining strip so that the thread can have a large angle of rotation for opening the cap. Here, production, construction and operation are particularly simple.

Furthermore, it is preferably provided that the two belt regions extend parallel to one another over a large part of their length. It is also advantageous if the two belt regions extend for part of their length parallel to the nozzle axis.

Any large angle of rotation can be achieved if the first end of the retaining belt connected to the nozzle is fixed on a ring coaxial with the axis of the nozzle and supported on the nozzle in a relatively rotatable manner, so that the ring rotates together with the cover. .

The first opening of the closure can be indicated under the following circumstances:

- the retaining strip is connected to the cover via at least one tearable tab between its ends;

- the two strap areas are connected to each other by at least one tearable tab;

-The strap is connected to the lid or lid gripping surface via a tear-off tab.

A particularly reliable retention of the lid on the container is achieved if a retaining strip is arranged diametrically opposite each other on both sides of the lid.

A small opening rotation of the cover is necessary if: the cover is fastened to the nozzle via a plug-in connection (bayonet connection, Renkverbindung); and the thread between cover and nozzle is inclined in such a way that when the cover is turned 90° to After 180 degrees the cap has come loose from the nozzle.

The cover is easy to grip if it has laterally protruding wing-shaped gripping surfaces on its upper end.

The retaining strap is in a protected position with the lid closed if the upper curved area of the retaining strap rests against the underside of the wing-shaped gripping surface in the closed state. A protected and visually pleasing position of the retaining strip is achieved if the retaining strip rests against the outer contour of the cover. Furthermore, it is proposed that one or both strap areas of the retaining strap are inserted into a recess or groove of the cover that is open to the outside.

It is preferably provided that for bag packaging, a boat-shaped weld-in part is formed onto the lower end of the nipple.

Description of the drawings

Various embodiments of the invention are illustrated in the drawings and described in more detail below. In the picture:

Figure 1 shows a first embodiment comprising a closed cover with gripping wings and a retaining strap,

Figure 2 shows a first embodiment including an open lid with gripping wings and a retaining strap,

Figure 3 shows a second embodiment comprising a closed cover without gripping wings and two retaining straps,

Figure 4 shows a second embodiment including an open lid without gripping wings and two retaining straps.

Detailed ways

The liquid-containing container made of plastic has on its upper side a cylindrical discharge nozzle 1 projecting vertically upwards and having an external thread 3 . The closing cap 2 is screwed with its internal thread onto the discharge nozzle and closes the upper opening of the tubular nozzle 1 . At the upper end, two wing-shaped gripping surfaces 2a, 2b are molded on the cover 2 from plastic and protrude from the cover on diametrically opposite sides.

In the embodiment according to FIGS. 1 and 2 , the cover 2 is connected to the nipple 1 via a retaining strap 4 . For this purpose, the retaining strap has two strap regions 4 a , 4 b that lie one above the other and extend parallel to each other, in which the lower end of the first strap region 4 a is fastened to the nozzle 1 , in particular to the ring 5 On the pipe, the ring is supported on the pipe so as to be relatively rotatable coaxially with the pipe axis 8 . A second belt region 4b is fixed or formed on the upper end of the first belt region 4a via a bend (bending position) 4c, and the lower end of the second belt region is fixed on the cover 2, as shown in Figure 1 when the cover is screwed on and as shown with the closure closed.

Thus, with the cover 2 screwed on (Fig. 1), the two band areas 4a, 4b form a loop extending vertically upwards with two loops extending parallel to each other over the largest part of its length. Belt areas 4a, 4b, which also extend parallel to the nozzle axis 8. In the closed state, the retaining strap 4 rests with its upper curved region 4 c on the underside of the wing-shaped gripping surfaces 2 a , 2 b , wherein the gripping surface 2 b has an underside for this purpose. A recess into which the curved portion 4c extends. The retaining strip 4 is therefore pressed against the outside of the cover 2 . In an embodiment not shown, one belt area 4 b or both belt areas 4 a, 4 b of the retaining strip are inserted into an outwardly open recess or groove of the cover 2 , so that the retaining strip is protected against damage.

In order to be able to identify whether the closure has been opened once, the closure has a warranty function. For this, either

- the retaining strip 4 is connected to the cover 2 via at least one tearable tab between its ends, or

- the retaining strap is connected to the cover or cover gripping surface 2b via a tear-off tab 6, or

- the two strap areas 4a, 4b are connected to each other by at least one tearable tab 7.

The difference between the embodiment shown in Figures 3 and 4 and the embodiment shown in Figures 1 and 2 is that a vertically arranged holder is fixed to two diametrically opposite sides of the nozzle 1 and the cover 2 respectively. A holding belt 4 having two belt regions 4a, 4b one above the other. As a result, the cap 2 is held on the discharge nozzle 1 more reliably and less easily lost. Furthermore, in this embodiment, the cover does not have a protruding gripping surface.

In another embodiment not shown, the cap 2 is connected to the nipple 1 not via a thread but by a plug connection (bayonet connection). Furthermore, for bag packaging, a boat-shaped weld-in part can be formed onto the lower end of the nozzle 1 .

Claims (13)

1. Plastic closure for a tubular discharge nozzle (1) of a container, said plastic closure having a closure cap (2) releasably fastened to the discharge nozzle, wherein the closure cap (2) is connected to the discharge nozzle. The discharge nozzle (1) is permanently connected via a retaining strap (4) which, with the nozzle axis (8) vertical, is fastened with a first lower end to the discharge nozzle (1) and from there with A first strap area (4a) extends upwards on the side of the closure cover (2) and, with the closure cover closed, the retaining strap has a bend (4c) in the upper area so as to be aligned with the second strap area (4b). ) extends downward to the second lower end of the holding band, and the second lower end is fixed to the closing cover (2), characterized in that: - the retaining strip (4) is connected to the closure cap (2) via at least one tearable tab between its ends; and/or - the first strap area (4a) and the second strap area (4b) are connected to each other by at least one tearable tab; and/or - the retaining strip (4) is connected to the closure cover or the cover gripping surface (2b) via a tear-off tab; The closure cap (2) has a laterally protruding wing-shaped gripping surface at its upper end, and the retaining strip (4) abuts the wing with its upper curved area in the closed state. on the underside of a shaped gripping surface, and the gripping surface has a recess on its underside into which the curved portion extends. 2. Plastic closure according to claim 1, characterized in that the closure cap (2) is releasably fixed on the discharge nozzle via a thread (3). 3. Plastic closure according to claim 1, characterized in that the first band area (4a) and the second band area (4b) extend parallel to each other for the majority of their length. 4. Plastic closure according to any one of claims 1 to 3, characterized in that the first band area (4a) and the second band area (4b) are parallel to the nozzle for a part of their length The axis (8) extends. 5. The plastic closure according to any one of claims 1 to 3, characterized in that the first lower end of the holding band (4) connected to the discharge nozzle (1) is fixed at the same position as the axis of the nozzle. The shaft is supported rotatably on a ring (5) on the discharge nozzle. 6. The plastic closure according to any one of claims 1 to 3, characterized in that a retaining strip (4) is provided on both sides of the closure cover (2) diametrically opposite each other. . 7. Plastic closure according to claim 1, characterized in that the closure cap (2) is fastened to the discharge nozzle (1) via a plug connection. 8. Plastic closure according to any one of claims 1 to 3, characterized in that the closure cap (2) is fixed on the discharge nozzle (1) via a bayonet connection. 9. Plastic closure according to claim 2, characterized in that the thread between the closure cap (2) and the discharge nozzle (1) is inclined such that after the closure cap is rotated 90 to 180 degrees The closing cap (2) has been loosened from the discharge nozzle (1). 10. Plastic closure according to any one of claims 1 to 3, characterized in that the retaining strip (4) rests against the outer contour of the closure cap (2). 11. Plastic closure according to any one of claims 1 to 3, characterized in that one or both strap areas of the retaining strap are inserted into an outwardly open recess of the closure cap (2). middle. 12. Plastic closure according to any one of claims 1 to 3, characterized in that one or both strap areas of the retaining strap are inserted into an externally open groove of the closure cap (2). middle. 13. Plastic closure according to claim 1, characterized in that, for bag packaging, a boat-shaped weld-in is formed on the lower end of the discharge nozzle (1).